Derricks



y 1959 H. J. TROCHE 2,886,187

DERRICKS Filed 001;. 29, 1956 4 Sheets-Sheet 1 FIG. 2

IN VENTOR. HERMAN J. TROCHE May 12, 1959 v H. J. TRocHE 2,836,187

DERRICKS Filed Oct. 29, 1956 4 Sheets-Sheet 2 INVENTOR.

' HERMAN J. TROCHE 8 ATTORNEY May 12, 1959 H. J. TROCHE DERRICKS 4 Sheets-Sheet 5 Filed Oct. 29, 1956 INVENTOR. HERMAN J. TROCHE ATT RNEY May 12 1959 H. J. TROCHE DERRICKS Filed Oct. 29, 1956 4 Sheets-Sheet 4 mGE INVENTOR. HERMAN J. 'TROCHE United States Patent 2,886,187 DERRICKS Herman J. Troche, Fairvicw Park, Ohio, assignor to J. H. Holan Corporation, Cleveland, Ohio, a corporation of Ohio Application October 29, 1956, Serial No. 618,727 Claims. (Cl. 212--8) The invention relates to derricks. More particularly, it relates to hydraulically-actuated tripod derricks stored on, supported by, and operated from trucks, and utilized for the installation and maintenance of utility facilities. The improved derrick has an A-frame consisting of two two-part side legs respectively pivoted at the bottom ends of a lower leg part to and adjacent the bottom rear of the sides of the truck, and a middle leg depending from the top portion of the A-frame and consisting, in part, of a hydraulic cylinder of telescoping parts attached at its bottom end to a cross sheave bar by a sheave bar extension, the cross sheave bar being journalled at its ends in and adjacent the top of rear truck framing. The sheave bar extension is welded to the cross sheavebar at one end and is pivotally connected at its opposite end to the lower cylinder part of the middle leg on a longitudinal axis which permits cross-wise movements of the middle leg relative to the A-frame. The middle leg serves to raise and lower the A-frame and to effect the working adjustments of the derrick.

The derrick side legs each consists of the lower part spliced to an upper leg part when the latter has been raised from horizontal storage position on the truck body roof to vertical position, thus forming a rectilinear leg formation. Manually-actuated means are provided for locking the two leg parts together after the adjacent ends of the leg parts have been brought into overlapping relation by the erecting of the upper leg part. A distinctive part of the instant invention relates to these manually-actuated locking means. .This locking together of the two leg parts is maintained during the working of the derrick outboard from the truck rear; Securing of the lower leg part in derrick storage position can be manually effected by the same manually-actuated locking means after the upper part of the leg has been lowered from vertical position thereof to horizontal storage position on the truck body. In storage position the lower leg part remains upright at the rear of the truck.

The manually-actuated locking means also serve alternately, one for the other, to hold the means serving at the time as locking members and thus obviate any movement or shifting of the locking members.

The annexed drawings and the following description set forth in detail certain means exemplifying the inventive structure, such means constituting, however, only one of the various forms in which the principle of the invention may be embodied.

In said annexed drawings:

Figure 1 is a broken side elevation of a truck upon which is mounted the improved derrick having two-part side legs and a middle leg, the view being of the right side and the derrick being shown in full lines in storage position and in dot-and-dash lines in erected position;

Figure 2 is a plan view of the rear portion of the right side of the derrick in storage position, the view being taken in the plane indicated by the line 2-2, Figure 4;

Figure 3 is a plan view of the rear portion of the rightjside of the derrick in erected position;

Figure 4 is a fragmentary side elevation of the rear end of the left side of the derrick in storage position, the view being taken from the inside;

Figure 5 is a fragmentary longitudinal section looking at the left side of the derrick in erected position, the

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2 view being taken from the plane indicated by the line 5-5, Figure 7;

Figure 6 is a fragmentary plan of the derrick and truck shown in fully extended outboard position of the derrick; Figure 7 is a fragmentary rear elevation of the derrick in erected position, the view being partially in section;

Figure 8 is a broken side elevation of the derrick in an outboard working position, the view being from the right side; and

Figure 9 is a rear elevation of a detail, taken from the plane indicated by the line 9-9, Figure 8, particularly showing the right side rear upper corner of the derrick and framing in an outboard position of the derrick.

Referring to the annexed drawings in which the same elements are indicated by the same respective numbers in the several views, the derrick is stored on, carried on, and manipulated from a truck 1, Figure 1, having a body 2 with a slidable roof section 8, chassis and running gear 3, cab 4, and a working floor 6. Supported by the floor 6 is a winch 5 from which extends a cable 28 playing over a sheave 37, Figure 6, rotatably mounted on a bolt 40, Figure 5, and forming part of a sheave assembly whose arms 38 are pivotally mounted on a pin 36, Figure 7, intersecting certain portions 35 of sheave-bar plates 35 hereinafter fully described. From the sheave 37 the cable 28 extends to and plays over a sheave 20 of the derrick head 19, Figures 1 and 6. The sheave assembly 38 is located in three different positions during different positions of the derrick, viz.: (1) a manuallyprocured storage position, (2) an idle depending manually-procured position preparatory to erecting the derrick, and (3) a mechanically-effected position when the derrick is erected, which latter position is constantly changing' during adjustments of the derrick, as will be hereinafter fully described.

The derrick is supported on the truck 1 by framing 9 including braces 7, Figures 1, 4, 6, and 7, mounted at the rear of the truck on the body 2, the framing 9 supporting at its upper end right-hand and left-hand angularlypositioned channel brackets 17 open toward the top and front of the derrick and within which the ends of a transverse sheave bar 16 are rotatably mounted. The brackets 17 are welded to the tops of vertical side members of the framing 9, Figures 1, 2, 3, 6, and 7, are extended at their bases into these vertical frame members, and are laterally inwardly extended therefrom. Welded at their upper ends to and depending from the channel brackets 17 are frame brackets 18, Figures 7 and 9, welded to the framing 9.

The derrick, which will be described as if viewed from the rear of the truck and looking toward the front of the .latter, has A-frame side legs 11 (right) and 12 (left) and a middle leg 15, Figures 1, 5, 6, and 7, these side legs 11 and 12 being pivotally secured by flattened bottom portions 11 and 12 thereof between pairs of rearwardlyextending truck brackets 13 secured to the bottom of the truck rear, these A-frame side legs 11 and 12 carrying at flattened top end portions 11 and 12 Figures 1 and 6, the derrick head 19 from which the middle leg 15 pivotally depends. The middle leg 15 which is a two-part telescoping and extensible structure having a hydraulic cylinder as a part thereof is secured at its bottom end to the center of the rotatable sheave bar 16 by sheave bar extension 15, spaced bottom end middle leg 1 outer lower-part 21 and a telescoping inner upper part 22, Figures 1, 5, 6, and 7, including an outer operating cylinder tube and housing assembly 49 sliding on the lower leg part 21 and secured at its upper end to the telescoping inner leg part 22. The lower middle legpart comprises inner and outer concentricspaced cylindrical members 21' and 21 Figure 5, forming an oil chamber (not shown) therebetween which communicates with the interior of the inner cylindrical member 21'. The middle leg 15 is extended and telescoped by oil pressure obtainable from any suitable source and fed to andwithdrawn from the middle leg through oil lines 27 and 27 Figures 1, 5, and 7. Oil entering the inner cylindrical member 21 of the lower leg part 21 and the port 27 from the oil line 27 extends the upper middle leg part 22 which latter carries the tube and housing assembly 49 with it, and lifts the derrick head 19. Oil from the oil line 27 entering through the port 27 into the space between the concentric cylinders 21' and 21 of the leg part 21, finds access to the interior of the cylinder 21 and re tracts the upper middle leg part 22. I

The structure and operation of the middle leg 15 are the same as those of the middle leg fully shown anddescribed in my pending application Serial No. 611,973, and form no part of the invention specifically claimed in this application. 7

The respective lower and upper portions 11-11 12"12 of the A-frame side legs 11 and 12 have pairs of respective upper hinges 11 12 and adjacent overlapping bottom hinges 111 -12 by which the side leg portions are permanently pivoted together by pins 25, Figures 4, 5, and 8. When the derrick is in vertical position, the lower portions 11' and 12 of the side legs 11 and 12 form rectilinear legs with the respective upper leg portions 11 and 12 through lapping channels 26 permanently attached to the upper leg portions 11 and 12 and projecting rearwardly therefrom in the storage position of the derrick, Figure 4. These lapping chan nels 26 swing downward and around the lower leg sec-' tions 11' and 12' as the derrick is erected to vertical position, Figures 5 and 7, and are locked to said lower leg sections 11 and 12' by pin St) or 51', as hereinafter fully explained.

The transverse sheave bar 16 is provided with annular washers 24 adjacent its ends and welded thereto, Figures 6 and 9'. Also welded at their ends to the end washers 24 are spaced arched cross bars 33 and 34, Figures 2, 3", 5, 6, and 7, which intermediate their ends intersect and are welded to the pair of spaced plates 35 welded to and extended at right angles from the sheave bar 16. These spaced plates 35 each have two spaced arms 35', Figure 5, which extend respectively'upon both sides of the plane of the sheave bar extension to which the middle leg 15 is pivotally secured. The plates also have opposite end portions 35 The sheave extension 15' is relatively right-angularly welded at one end to the cross sheave bar 16, Figures 2, 3, 5, and 7, at a angle from the axis of each of the bars 33 and 34 Where the latter intersect the arms 35 of the plates 35. The other end of the extension 15' is pivotally secured by a pin 31 between the spaced extensions 15 of a bottom plug 47 for the lower end of the lower middle leg part 21, Figure 5.

When the derrick is in storage position but about to be erected, the cable-directional sheave 37 is" manually pivotally moved on pin 36 from its storage position (not shown) to an idle depending position shown in Figure 2. Then, as the middle leg 15 is hydraulically extended and the derrick is thus erected to vertical position, the sheave 37 and the sheave bracket assembly 38 are automatically moved by the turning of the sheave bar 16,- in-a manner hereinafter fully described, from the position shown in Figure 2 to an upper and forward position shown in Figures 3 and 5. When the derrick has been lowered and is in storage, the sheave 37 can be manually moved t and 43 and 48 in the sheave arms 38, Figure 5, and holes 4 from the depending position shown in Figure 2 to the storage position and then manually moved back to the depending position shown in Figure 2 when it is desired again to erect the derrick. I

Means are provided for locking together the sheave bracket assembly 38 and the plates 35 when moving them from the idle position shown in Figure 2 to the operating position shown in Figures 3 and 5, and from the latter position to the idle position. These locking means are also used after the sheave 37 has been manually moved from idle depending position to storage position but in a set of different registering holes in the bracket assem: bly 38 and the plates 35. For this locking of the bracket assembly arms 38 of the sheave 37 to the sheave bar plates 35 in any position of the sheave 37, a two-part locking pin 45, Figure 7, is utilized, which is particularly shown and described in my said pending application Serial No. 611,973. This locking pin 45 in the idle depending position of the sheave shown inFigure 2 intersects holes 43 of the sheave assembly arms 38 and holes 44 of the plates 35, Figure 5. Dependent upon the position of the sheave 37, whether in idle depending position shown in Figure 2, and just described, or in storage position, the pin 45 is selectively engaged with different holes in the plates 35 and in the sheave arm assembly 38. It should be understood that the sheave 37 is automatically moved from the idle depending position shown in Figure 2 to the operating position shown in Figures 3 and 5, and vice versa, and also outboard, Figure 9 by reason of the turning movement of the sheave bar 16, and thus the latter, the plates 35, and the sheave assembly 38 turn as a unit, and the locking pin 45 remains in the same holes; whereas, the movements of the sheave 37 from idle depending position shown in Figure 2 to storage position, and vice versa, are manually-actuated ones wherein the sheave 37 andarm assembly 38 are turned on the pin 36, Figures 2, 3, and 5, and the locking pin 45 is not used. This locking pin must be inserted in another set of registering holes after the sheave 37 and assembly 38 have been moved to storage position. The aforementioned holes are 44 and 46 in the plates 35,

46 and 48 are utilized for the locking pin 45 after the sheave 37 has been manually moved to storage position.

The invention presented in this application is particularly distinguished from the invention disclosed in said pending application, Serial No. 611,973, in that, whereas the invention of said pending application disclosed automatic hydraulically-operated sleeve structure for locking together the lower and upper spliced portions 1111 12-12 of the legs of the A-structur'e, the invention disclosed herein performs this function by manually-actuated pins.

In the invention presented herein the rectilinear leg structures comprised of the upper and lower leg portions are made secure by manually-operated locking pins 50 which are caused to intersect the respective lower leg} portions 11 and 12 and the lapping channels 26, Figures 3, 5, and 7. There are a pair of other locking pins 51 which are manually applied to lock the lower portions 11' and 12' of the derrick side legs to'the derrick framing, in storage position of the derrick, Figures 2 and 4.

There is a pin 50 and a pin 51 for each side leg 11 and 12, a pin 50 and a pin 51 constituting what are herein described as a pair of pins.

The pins constituting the pair 50 and the pins Consti-i tuting the pair 51 are termed respectively the side l eg pinsand the storage pins and these pin pairs 51) and 51 are structurally similar and both are used in any position of the derrick. The side leg pin 50 is'utilized to lock the protruding lower end 26 of the lapping channel 26 to the lower portion 1112' of a side leg when the derrick is erected and also when the derrick is outboard." In these positions of the derrick the storage pin 51 holds the side leg pin 50 in position. The opposite situation obtains when the derrick is in storage and until it is erected to vertical position, i.e., the storage pin 51 locks a side leg lower portion 11'12 to the truck framing and the side leg pin 50 holds the locking storage pin 51 in position.

Each of the pins 50 and 51 has a main cylindrical pin-like body 50, 51, and a channel-like relatively rightangular extension 50, 51' secured at its base and adjacent one end to one end of the body 50, 51. The channel-like extensions 50', 51', of the'pins 50 and 51 form grip handles for the respective pins. The pin-like body 50-51 of the respective pins fits into the channel 5051' of the other pin and forms a holding member for the latter. The pin body 50-51 is so positioned, after the other pin has been placed in locking position, and thus prevents the locking pin from rotating, or from coming out of the elements through which it has been passed.

For instance, in Figures 3 and 5, the pin 50 is locking together the lapping channel 26 and the lower leg portion 1112'. This is manually effected when the upper leg portion 11 -12. of the side leg has been raised from storage position to erect position and is made possible by holes 14 in the protruding end 26', Figure 4, of the lapping channel 26, and holes 23 in the lower leg portion 1112, which holes 14 and 23 register when the upper leg portion 11 -42 is erected and the lapping channel 26 swings down and around the leg portion 11'-12'. There is an apertured holding clip 32 secured to the lower lapping channel end portion 26', Figure 4, and when the lapping channel swings down to the position shown in Figure 3, this holding clip 32 is positioned as shown in said Figure 3. This position of the clip 32 permits the body of the pin 51 to fit into the channel-like extension 50' of the pin 50. The pin 51 .lies in front of pin 50 in this erect position of the derrick so is in logical position for withdrawal first when it is desired as a locking pin for storage position of the derrick. The pin-like body of the pin 51 thus fitted into the channel-shaped grip handle 50' of the pin 50 prevents locking pin 50 from rotating or coming out of the side leg portion 11'12' and lapping channel 26.

In the storage position of the derrick the pin 51 is the locking pin and the pin 50 the holding pin. For this storage locking position there are right-hand and lefthand transversely-spaced brackets 29, Figures 2, 3, and 4, connected by a cross plate 41, and secured to and rearwardly longitudinally extended from the derrick framing and centrally overlapped by an intermediate bracket 30 secured to and forwardly extended from the lower leg portion 1112'. These brackets 29 and 30 have registering holes, 42 and 52, respectively, Figures 2, 5, and 8, which accommodate the body of the pin 51. There is an apertured holding clip 39 secured to the inner bracket 29 and so positioned that when the body of the holding pin 50 is passed theret hrough this body lies in the grip handle part 51' of the locking pin 51 and prevents the pin 51 from rotating or from coming out of the brackets 29 and 30. In this position again pin 50 lies forwardly of pin 51 and is the one logically first removed when the pins are next required to maintain proper erect and outboard positions of the derrick.

The pin acting as a locking pin is not removed from its locking position until after the holding pin therefor has been removed from one derrick position and established as a locking pin in the other derrick position. This is a logical procedure as the pin first removed, the holding pin, is in a front position. Furthermore, this prevents possible accidents, when changing pin-s from derrick storage position to derrick working position, since, if storage pins 51 were removed from locking position when the derrick is in erect position before pins 50 were inserted to lock lower side leg portions 11 and 12' to lapping channels 26, the derrick could collapse.

Considerable reference has been herein made to outboard positions of the derrick. Derrick adjustments are made to procure the desired outboard position thereof. An extreme outboard position of the derrick is shown in Figure 6, and an intermediate working position in Figure 8. The different positions assumed by the sheave 37 in different outboard derrick positions are suggested by the dotted outlines of the sheave shown in Figure 1.

What I claim is:

I. A derrick having two converging side legs, a truck body, each side leg comprising an end portion having a reclining storage position on and adjacent the top of the truck body, and an opposite end generally vertical portion whose upper end is pivotally secured to and adjacent the inner end of the first-mentioned legportion, said vertical leg portion being pivotally secured at its bottom end to and adjacent the bottom of the truck body, derrick-supporting frame means erected on the truck body adjacent said vertical leg portion, a lapping member secured to the inner end of the first-mentioned leg portion and having an extended part thereof overlapping the vertical leg portion when the derrick is in operative position, thus to form a rectilinear side leg of the two leg portions, means for erecting, lowering, and adjusting the side legs, an apertured clip secured to the extended part of the lapping member, a pin aperture in said extended part exteriorly of the clip, an aperture in the vertical side leg portion which registers with the clip aperture in the rectilinear formation of the side leg, a bracket secured to the frame means, an apertured clip secured to the bracket, the bracket having an aperture laterally of said clip, an apertured bracket extended from the vertical leg portion and whose aperture registers with the aperture of the :frame bracket in the storage position of the side legs, and a pair of pins for each side leg, each of which pins has a pin-receiving extension, one of said pins being selectively received, for locking purposes, in either the aligned apertures of the lapping member and the vertical leg portion, when the side leg is of rectilinear formation, or received, for locking purposes, in the storage position of the derrick, in the aligned apertures of the bracket of the vertical leg portion and the frame means bracket, and the other pin being selectively received by either of the clips, and lying in the pin-receiving extension of the first-mentioned pin and holding said firstmentioned pin in locking position.

2. A derrick, characterized as'in claim 1, in which the extension of a pin is relatively angular to the axis thereof and has a portion on which the holding pin bears.

3. A derrick, characterized as in claim 1, in which the pin-receiving extension of a pin is of sufficient length to serve also as a grip handle when the pin is in holding position.

4. A derrick, characterized as in claim 1, in which the side legs constitute an A-frame, in which the erecting, lowering, and adjusting means comprise a middle leg which pivotally depends at its upper end. from the apex of the A-frame, in the operative position. of the derrick, in which the derrick-supporting frame means for the two side legs extend above the truck body, in which there is a cross sheave-bar journalled at its ends in and adjacent the top of the frame means, and in which the middle leg comprises a double-acting hydraulic cylinder and is secured at its bottom end to the sheave bar.

5. A derrick, characterized as in claim 1, in which the pin-receiving extension comprises a dhannel-like member angularly related to the pin body, said member having a base to which an end of the .pin body is secured.

References Cited in the file of this patent UNITED STATES PATENTS 

